This is an insanely, wicked amazing calculator. Once you try it, you'll wonder how you ever survived without it. It beats the b'jeez out of any normal calculator program. Type what you want, and get an answer.

I absolutely cannot recommend this program highly enough. It's on my very, very short list of true "MUST HAVE" programs.

Finally, I found an application called "Soulver" - an app with the dual-frame design I initially had in mind! The current PC version was too old and had many bugs, but it turned out the Soulver team made great strides in developing a version for the Apple Macintosh. Our hearty congrats go out to Aqualia for creating a wonderful piece of software, but I couldn't wait for a Windows port, hence OpalCalc is the result after years of work.